### Draw a line segment $AB$ and bisect it. Also, bisect one of the equal parts.

Step by Step Explanation:
1.  Draw a line segment $AB.$ A B
2.  With center $A$ and radius more than half of $AB$, draw arcs one on each side of $AB$. A B
3.  With center $B$ and same radius, draw arcs cutting previous arcs at $P$ and $Q$ respectively. A B PQ
4.  Join $PQ$ and which intersect $AB$ at $C$. A B PQ C
5.  With center $A$ and radius more than half of $AC$, draw arcs on each side of $AC$. A B PQ C
6.  With center $C$ and same radius, draw arcs cutting previous arcs at $R$ and $S$ respectively. A B PQ C RS
7.  Join $RS$ and which intersect $AC$ at $D$. A B PQ C RS D